I have to learn and practice iRules. That's why I decided to set up my lab. Below you can find my notes. For some of you it may be easy but I wanted to be clear enough even for people with basic computer/network skills.
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Required components:

1)VMware Player

2)BIG-IP: BIGIP-11.3.0.39.0-scsi.ova

https://f5.com/products/trials/product-trials

You have to select 1 option, register and generate license which will be sent by email (you have to start downloading).

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how to use vi editor:

- once you type: vi filename
- before you can edit you have to type ':i' to enter edit mode
- once you finish click 'Esc' and you will be back in read mode
- to save file: ':w'
- to exit file: ':q'
- to save and exit: ':wq'
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once you generate license just download it and add to the file: /config/bigip.license

vi /config/bigip.license

and paste that license.Reload license:

reloadlic

Access WebGUI and finish activation process.

h) add VLANs (from Web GUI)

Menu: Network->VLANs: click Add with any name like Vlan1 and allocate physical interfaces 1.1 (untagged)
Menu: Network->VLANs: click Add with any name like Vlan2 and allocate physical interfaces 1.2 (untagged)

i) enable physical interfaces:

Menu: Network->Interfaces, interfaces 1.1 and 1.2 should be enabled now

j) add Self IPs:

we should have one IP assigned for server's network and one for client's network: